(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Computer Applications

A single dimensional array has 50 elements; which of the following is the correct statement to initialize the last element to 100?

Assertion (A): Integer class can be used in the program without calling a package.

Reason (R): It belongs to the default package java lang.

Write the memory capacity (storage size) of short and float data type in bytes.

Differentiate between if else if and switch-case statements.

Give the output of the following code:

String P = “20”, Q = “19”,
int a = Integer .parselnt(P);
int b = Integer. valueOf(Q);
System.out.println(a+””+b);

State the data type and value of res after the following is executed :

char ch = ‘9’;
res = Character. isDigit(ch)

What is the difference between the linear search and the binary search technique?

Give the output of the following:
Math.sqrt(Math.max(9, 16))

Write a program to input 15 integer elements in an array and sort them in ascending order using the bubble sort technique. 

Design a class to overload a function series() as follows: 

(a) void series (int x, int n) – To display the sum of the series given below:
x¹ + x² + x³ + ……………. xⁿ terms

(b) void series (int p) – To display the following series:
0, 7, 26, 63 p terms.

(c) void series () – To display the sum of the series given below:

`1/2 + 1/3 + 1/4 .....1/10`

State the number of bytes occupied by char and int data types.

Name the following :
(i) A keyword used to call a package in the program.
(ii) Any one reference data type.

State the data type and value of res after the following is executed:
char ch = ‘t’;
res=Character. toUpperCase(ch);

Differentiate between searching and sorting.

If int x [ ] = { 4, 3,7, 8, 9,10}; what are the values of p and q ?

(i) p = x.length
(ii) q = x[2] + x[5] * x[1]

Write a difference between the functions isUpperCase() and toUpperCase().

int res = ‘A’; 

What is the value of res?

What is a parameterized constructor?

Write a program to input forty words in an array. Arrange these words in descending order of alphabets, using selection sort technique. Print the sorted array.

Write the return data type of the following function:

log( )